Feature request: colorized log view

[chwiese]

Some tools provide colorized output to stdout, e.g. dbt. If these tools are run via the ShellTask (or in dbt‘s case the DbtShellTask) with either return_all or stream_output), those color codes are included verbatim in the log output, but not parsed. It would be great if shell color codes were parsed to color the text in the log view.